Here is another 2009 post I found, obviously from someone who is also in NPG and studied Al Bartlett:"What if there was a total moratorium, ruthlessly enforced, on having ANY kids for the longest time possible without causing extinction? That would be say, 30 years. At the present death rate of 60 million per year, and if it was somehow done instantaneously, then the population in 2039 would be down to 5 Billion. With all the effects of depletion and pollution on food production for that time, it would yield around 1,200 calories per person per day, if distributed evenly. People would have to be at a maximum weight of 100 pounds to do enough work to feed themselves at 400 calories per day expended above the sedentary starvation level for someone of 100 pounds weight. If those old enough to breed kept the population at that level of near starvation as the sustainable level continued to decline from further depletion and pollution effects, then the population would decline further to a final state of sustainability where depletion equals replenishment of soils, and water, and pollution is at absorption rate. The world population would be around a billion, and would have avoided the holocaust of the population crash, and extinction if human habits had also changed toward sustainability.It is a mighty big what if, and knowing human psychology and inertia, just will not happen. The population drop off will be the natural result of depleting and polluting the habitat. Human life expectancy will peak and fall, as food production ability also falls, and too many people causes falling incomes and increased prices to world depression. Pollution effects will continue to increase, and they are nasty.The people that have had more than 2 kids since the world reached maximum sustainable at the lowest reasonable standard of living, the late 1920s, have caused what will happen. Of course, no one knew until the late 1960s, and now, you can see the impossible situation our species is in. There is no way to stop the Juggernaut.What CAN be done is to mitigate the destruction of the biosphere to prevent extinction of the survivors. Minimize pollution of all kinds, maximize soil building with true composting increase, reduce pure water usage through efficiency and recycling, and reduce family size to decrease depletion and pollution, and lessen the impact of the crash. Certain areas can be "niched" to being totally independent for energy and complete nutrition, while others who use up everything will turn their lands to unusable wastelands. Global pollution will still affect even these "niched" areas----mercury, malevolent climate change, and other atmospheric and seaborne toxics---for many thousands of years. The more people of now and until the mid century crash, the less survivors and survivability of the species, along with many other species, many of which we need in our ecological support system.Reduce, Re-use, and recycle are still good words to live by, and teach. What is really more important; personal selfishness, greed, and ignorance, or future generations of yet unborn people? What is more important, you, or the human species? Soldiers fight for their country, while true environmentalists fight for those future unborn people. Both make personal sacrifices, while the selfish, greedy, or ignorant do not. Environmentalists can help teach the ignorant, and show the selfish and greedy the errors of their ways. It is frustrating because the ignorant are very hard to teach, and the selfish and greedy resist strongly in changing their ways, with every rationalization possible, every form of deceit possible, and with the power their money can buy.Still, reduce, re-use, and recycle--live it, and teach it. Rest when needed, and know you are doing what is truly right and good."Population science and pollution effects, with math, and a good heart.I'm saving up ammo!!!

Before every action and decision think of the consequences 7 generations into the future....Ute Rule of Life

Well, I found this, and, if true, mitigation has been in progress with geo-engineering, and it is only stalling the inevitable. From the holmestead.ca 2004, "Deep Shield's" comment;

"11. Why all the secrecy?

Due to the severity of the situation it is mandatory to maintain public calm for as long as possible. The Earth is dying. Humanity is on the road to extinction - without the Shield mankind will die off with in 20 to 50 years. Most people alive today could live to see this extinction take place. This means that an announcement of the situation we face boils down to telling every man, woman and child on earth that they have no future, they are going to be killed. People would panic. There would be economic collapse, the production and movement of goods would collapse. Millions would die in all cities on earth, riots and violence would reduce civilian centers to rubble within days. Half of the population in dense metropolitan areas would try to leave the cities seeking 'safety' in the rural areas thinking that they would be safe. Those left behind in the cities would be at war with their neighbors, fighting for the remaining supplies. We would be telling the world that the world is coming to an end, and even with the Shield the chances of survival are small.

UV Summer and Global Warming are the immediate problems we face, there are far greater problems that are raising their ugly heads and will present new problems which in some cases have no viable solutions at this time. Ecologies are collapsing. The extinction rate of species is climbing. The amount of chemical pollutants in the water and soil are fast approaching and in many places has surpassed the earth's ability to heal itself. Crop failure is on the rise, even in the USA the returns on crops are smaller than they were 10 years ago. Even with the advances in genetically altered food crops, we are falling behind in our ability to produce enough to go around. Throughout the 20th century chemical fertilizers and pesticides were used to insure the best yields. Unfortunately many of these have contaminated ground water, killed beneficial insects along with the undesirable insects. These chemicals have gotten into the food chain and are affected other species besides mankind. It is only a matter of years before famine spreads like a cancer throughout the world.

Clean fresh water is in short supply, in many places well water is non-potable, containing the run off of pesticides, herbicides and fertilizers that have been used on crops and lawns. The water treatment facilities we have are unable to scrub out all of the toxins we have placed in the soil and water supply. Many of the toxins we find build up over time in the body, a long slow poisoning which has been making its presence felt in many areas of the world in the form of cancers, leukemia, sterility, birth defects, learning disorders, immune deficiency problems, etc. These are on the rise, any good researcher can find the records. For decades there was public outcry for the end to pollution. For every small step we made to clean up our production, millions where born who added to the problem. Yes, pollution is down per individual, however there are a couple more billion individuals producing pollution, thus the real numbers have an increase in over all pollution produced. Name a city that does not have problems with smog. You would be hard pressed to find one. Though smog controls on automobiles is higher than ever before, the number of autos on the road has increased thus the amount of smog producing pollutants is higher than ever before. All the clean air acts passed to curb individual factory and auto emissions did not address the production of more factories and more autos. Here an uneasy compromise was made between the need to maintain the economy against the need to maintain the ecology. The ecology lost since it was estimated to be a problem decades from now. The economy was a problem that would have dire effects today.

All of these factors combined have produced a scenario that in shorts boils down to the end of the world in 50 to 75 years. Even if we were to stop all emissions of pollution today, the inertia of past decades is enough to carry us over the brink in 100 years. However we cannot stop the production of pollution, to do so would mean shutting down every factory, every auto, every train, truck, ship and every household on the planet. Electricity is used to heat many homes in the Western World. The production of electricity produces fewer pollutants than heating all homes with wood or coal. Cutting our power generation abilities down to hydroelectric and fission reactors would leave a good chunk of the world in the dark. It is an impossible situation, our civilization is geared to the use of energy, take away our energy and civilization will collapse.""Keep using fossil fuels and the ecology collapses, and stop using them--the economy collapses", from "Blind Spot" the documentary.Just how will people buy their way out of a destroyed biosphere? A multi-generational spaceship to a possible new planet?? Try to terraform Mars??

Before every action and decision think of the consequences 7 generations into the future....Ute Rule of Life